Attempt to Pay Back # 2

I did some figuring...

On that 15* plate, if you thinned the outer edge to .125 you could put a .375 set screw in and have adjustment from 13.5* down to about 6*. If you thinned a nylon insert lock nut down from ~.140 thick to in the .100 range, the adjustment increases to 4* or 8* total mechanical advance.

It's really easier to get the adjustment down to almost zero with a plate with less advance because the overall width is the same regardless of amount of advance. You can remove more of the outer side edge, it's thicker.

Could the plate screw be shortened?